okay putting the force application stuff off till tomorrow
but i was doing some figuring with the formula for bolt shear strength from the lilja website. i used the small lug on a romy bolt.
the height i used was .27, length .423, 2 lugs, and 100,000 psi yield strength for hardened 1050
.27 x .423 x 2 x 100,000 = 22,842 then divide by a safety factor of 2 and you get 11,421 psi of bolt thrust before shear occurs
the 100,000 yield strength nums are for 1050 hardened to rc 30, i got 1050 from a post on another site, but as for the rc number im not sure, the psi num drops pretty sharp as hardness goes down
C:\Documents and Settings\ba\Desktop\Ruger Investment Casting - Steel.htm
BG can you get the measurements from a m70 bolt?